Compressor for refrigerating apparatus.



F.1.HEIDEM'AN- COMPRESSOR FOR REFRIGERATING APPARATUS.

APPLICAUON HLD IAN. I4. 19m.

UNITED sTATns PATENT minion..

FRED J. HEIDEMAN, 0F DETROIT, MICHIGAN, ASSIGNOR T0 KELVINATOR COPOBA- TION, OF WILMINGTON, DELAWARE, A COBPORATICN 0F DELAWARE.

COMPRESSOR FOR REFRIGERAIING APPARATUS.

Specicatlcn of Letters Patent.

Patented July 23, 191,8.

Application tiled .lanuar 14, 1918. Serial No. 211,150.

To all whom it mty concern.'

Be it known that I, Fnsi) J. HEIUEMAN, n citizen of the United States, residing at Detroit, in the county of Wayne und Stute of Michigan, hnve invented n certain new und useful li'nprovcment in Compressors for lt'cfrigeruting Apparatus, of which the fol lowing is a full, clenr` and exnct description, reference being hud to the l.luccompnnyino; drawings.

This invention relates` to refrigernting ninchinery und especially to the construction ci n compressor employed in such machinery.

Among the objects of the invention are the provision of a cheap, simple and efficient vulve construction for small sized compressors; the provision of a. valve and vulve body of such construction as to shield from the corrosive action of the refrigerant the base metal of which the compressor is chiefly y, constructed; the provision of a device which will be rigidly held in place when assembled, instantly 'taken apart 'when the compressor is disassembled, and in which grinding and adjustment to the valves is' gretl facilitnted; while further `advantages o the invention will become apparent as the dcscription proceeds. Y y

In the drawings accompanying und forming' n part of tins application I have shown one embodiment of my said invention, although it will be understood that these `drawings are illustrative merely und are not to be given any limiting effect. In these drawings Figure l is a sectional view through n purt of n twofcylinder compressor constructed in accordance with my invention; Fig. 2 is u transverse sectional' view on the line 2--S' of Fig. 1; and Fig. 3 is n, separated perspective view of the diil'erent valve and closure parts.

Describing the parts by reference clntrnctorse-1 represents the cylinder block of the compressor which ispieferably of enst iron und is here shown ns provided with two purnllel cylindrical bores 2--2, although the number may be increased or diminished. Euch of these bores is lined with a cylin` dricnl sleeve 3 of non-corrodihle metul such as bronze, the upper end of euch sleeve being Y)reiernloly provided with an external annular flange 4 snugly received in a rabbet formed in the cylindrical block. The upperi face of euch Bunge may also be formed with` an annular groove 5, for obstructing leakage,

although these minor features are not necessary to the use of my invention. Superposed on top of the cylinder blck 1T ls a head member 6, also preferably formed of cast iron, and formed in alinement with each cylinder with un aperture 7 of smaller diameter than the sleeve 3. Located in each aperture is the cylindrical portion 8 of a, valve body whose lower end is formed with n laterally projecting circuler flange 9 seated flush in a, recess in. the heud member concentric with the aperture 7. This flange is of suilicient width to'overlup thesleeve 3 of the cylinder to which it is applied and the entire vulve hotly is constructed of some metal which is et 'xr 't resistent to the cori rosive effect of the refrigerant fluid and of sulcient hardness to withstand the hammering of the valves. For usc with a sulfur dioxid refrigerant. I preferably employ a hard bronze which is high in co per and lloyed chiefly with tin, though do not restrict myself to this composition or even UX these ingredients.

and receiving the arms 1x3 o a, spider w ose y bod is formed with enelongntcd cylindri-v.`

cal oss 14 projectin toward the valve sent. This boss is red or the reception of the valve st m 1 whose head 16 is located 'ne tween tie boss and valve seat so as to have s. limited range of movement. :Thelower end of this boss is countnrbored as shown at. 17 to preyent the hammering of the valve from upsetting the metal and pinching the valve s The thickness of the spider is such as to ,bring its upper surface substantially flush with the upper surface of the head member 6 so us to permit the spider to be held in place by engagement with the cover late 20 which 1s clamped upon the top of t e'liead by means of screws 21--21 arranged in any suitable number and prefercblymtraversing the heat. ,nd tapped into the cy der block,

The lower face of the cover late is formed with a channel 22 whose wi th is less than the diameter of the spider so that the latter will be and held in place by the in- Strnment` ity of the cover plate. Snrrounding euch boss is a spiral s ring 25 by means of which the valve is yie its lower end being received in a groove 26 formedin the valve head. The upper end of eaich valve stein referably projects above the top of its spi er and is squared as at 27 or otherwise formed to receive a suitable tool whereby the valve may be ground to its seat when necessary. The upper face of the top plete is formed with a flattened seat 30 for the reception of an. outlet fitting shown) which communicates with the chalinel 22 by means ot' the piisl-.iagewny 3l..

By the arrangement; lilluitrated and dcscribed the entire cylinder is incaetal in. non-v corrodible metal so that no grit, scale, or oxid from the iron can become dislodged under the Corrosive action of the refrigerant to fall into the cylinder and canse an abrau sion of its walls; the valve is likewise shielded from the corrosivel etlccts of the refrigerant since the valve body, spider, sind sprigare also preferably made ot' the saine resisting material; the clamping ofA the cover to the head and the head to the cylinder block, holds the spiders in'their seats, the valve bodies in their apertures, and the cylinder sleeves in their hores, while permit ting their easy release; the movement of the valves is limited so that quick action is Sorurcd; while cheap and rapid manufacture is possible.

lt will be understood that many changes in construction and detail may be made within the scope of my invention as defined in the claims hereto annexed.

Havingr thus described my invention what l claim is l. In a compressor for refrigclating ma cliinery, the combination with a cast-iron cylinder block having a cylinder-bore and ahead member having an aperture smaller than said bore and registering therewith, of u, non-corrodible metal sleeve mounted in said bore; a hollow body also of noircoi'io dible metal inserted in Said aperture and having a flange overlapping said sleeve at dingly depressed,

all points, and a n(in-corrmlihlc valvenioi'u;

ber in said hollow body.

2. In a compressor for chincry, the combination cylinder block having a cylini-lei-boro and a head member having vun aperture Smaller than said bore and registering therewith, of a non-corrodible metal sleeve mounted 'i-h said bore, a. hollow body of'iu'in-corrodible metal traversin r said aperture and substantially 4flush wit tho surface of said head member et each end, the end of `fiad body rcfrigeratng inuwith a cast-iron l next to" said cylinder having a lateral Harige (not.

said bore lit-iig` of gieatcr diameter than said metal sleeve, and a valve in said body.

I l. ln a compressor for refrigernting ma clnnery. the combination of a. cast iron cylin der block having a faced end and a bore opening through said end, said bore being Surrounded by a rablict., a cast-iron head member dctuchably secured to said. faced end, and havingr an aperture smaller than. said bore and in alincment therewith, said aperture also surrounded at the end next) the cylinder bore` by a rabbet of apiroai` mately the saine diameter as the cy index' here, of a non-corrodible metal sleeve in said bore and in said head, each sleeve having o, flange tilting its ou'n rabbet and engaging the opposite flange, iv hereby rnach is secured in place 4. In :i rompi-essor for rct'i'igerutinv machinery., the combination with a c'lindci blot-l iuiing un tip-in mii/hul bore, ogn cloeni'c inundar liavinir; n Imre therethrough, .':ahheted al the rnd away fi'uni tlw cylinder valve scat al the end in: said cylinder, n lspider having its arms seated in said rabbet, and having an aperturcd body. a. valve having its stom slidably supported by said body and its head coperating with said seat, and a top plate secured to the outer face ol' unid closure and havinga passageway registering with said bore, the sides of said passageway ovm-hanging said spider whereby the latter is secured in pl. e.

5. In u compressor for refrigerating machinery, 4i cylinder head closure traversed by a longitudinal bore formed with a valve sont at its inner end and a rahbet at its outer end. u apider having arms seatedjn Said raliliot and a longitialinally bored bod. a' valve inning its Leni slidahl" receive( in said spider here and its hein cooperating with Aowl but. the lud of `said :sten: projectH ingr heroin said :pidrr and formed for the rewpliou of a tool whereby it may be rotat-ed, and a cover plate clamped to said closure and engaging seid Spider, said oever plate ha ving a paisageway communicatin with said tis-st holle and receiving the eng of said stem.

i5. ln a compressor for rcfrigcrating nizw cliinery, a cylinder head closure traversed by a longitudinal bore ioiiiied with arvlve neat at its inlur rnd und n Spidcr'siif at its outer cnil` a spider in said idei seat and liavini,r a longitudinally here( ing toward said valvt` seat, a having its stem projecting bore und its pu pet valve into t e spiderhead located between said spider-body and valve scat, the longitudinal play oi' said valve head being very small, a Spl'llig carried by said spider und yieldillgly holding said valvohcad to its seat, and incluis securing said spider initsscat.

7.' In ineoinpresppi." forV refrigei'ating innand lining formed with abody depend- Bti chnary, il c linder head annum trllvelcll by lon ibn ina] bore fi'llnlud with u vulva sent al. i inner and und a spider sent, lit 1w Unter and, a spidervin said spider sent llilll having s; longitudinally bored body de pending toward saidl'lvalve seat, a puppet valve having its litem' pro'ecting into tlm spider-bore and tsl llgnd located between said spider-body und valvwsullilz, il helical ging the adjacent face of lnl vulve-llend, an Imaam` securing `sind spider in its smi. 8. In aompr'essor fur l'efl-lgemting ma chiuery, li c'ilglirull' cylillilm block having; u pliirlllify` nl open cylmlll'lnzll llillos lllilcln, elcll xubbeted nl, 4its upm uml, a nonmlm-w dible metal sliluvl in elwll bore lllll'illg -l (lange seate'd in lln` uililespumling rlilllml,` n cash lyon head nlvnibui having ill nlinelneul, Witllhach Sleeve :l liillu lsnlnlll-ll" tllzln ille sklave' und a, xlllllmlA llwilupping illu cdgu, of

michV-ffslseeve, il non wil-mgllllu lnulill vulve- "loay loculd. ill lillll if elllil lnx( llore-1l llllll lllll ing :l llnliLl` "-:lzlll-ll ill illu lllil'vnplllnlillg l'lllllmi` mi llllgnglllg illu sluwe* rl|l|| l ill tllci'i'w, endl of lQuill llmllw billing' :l lungiillllinnll cllnnllwlfill-lumi willi a` v.ll\ik ,will lll. tlln cylinder und nml :l splilul uit :ll ills opplllliul unil, ll llliilll' ill mlill Ypirlvi' Hull, n vnlvl cnlpcl'lll ing*f lill mlill llllvv Sull lllnl guidi-d by illu. rnlll-l-ublmllllllg p'nlm bully, the und olf lllll` vulve hun px'ujouting lluyulnl Suid lligllll lill'lnllcl` :i lIlling intui'posiil belwilin clllll :,clliill-l' :lllll il@ l'lllle, :l cover pluie -llpul`llil-swl llilllll Amul hund lnclnllcr nml illlguglng all :will spilli-rs, :mill pluie hailing la, lllllilnlll mlllnllnlimltling with lill Suid l'lllvel'llzlilllllll's :llnl receiving lille prujnlfling; \;l`lvislifiils, :lllil inl-.nnb` .securing :said rover' lllilc. llwll invllllwr, :lllll c ylmli-l hlm-l( lilgclllr lll-,rally sllill Sli-yves, vulve bullies. nml willem are held ill place In Leslinilllll wlmi nf, l lli'mullto nllix my signature, 

